Non-swappable refers to the state of the AS, guaranteed to be swapped in. Not taking a pagefault requires that you pagefix the page. Why would you do this?
Kees. > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Joseph Reichman > Sent: 24 May, 2017 15:19 > To: [email protected] > Subject: Re: Difference between Transwap and Dontswap > > While in Xmem I didn't want to take a page fault > > I had scheduled a SRB in another AS and was referencing storage in the > SRB in the AS that invoked the IEAMSCHED > > > > > On May 24, 2017, at 9:14 AM, John McKown > <[email protected]> wrote: > > > > On Wed, May 24, 2017 at 7:43 AM, Joseph Reichman > <[email protected]> > > wrote: > > > >> At the risk out sounding stupid why does it first have to be swapped > out > >> > >> > > I'll bet that you're envisioning all the pages being physically > written > > out to a local page dataset, then physically read back in. I don't > think > > this is what is really done. It is _logicallly_ swapped out. And then > > _logically_ swapped back in. Then marked non-SWAPPABLE. During the > swap in, > > the data in physical memory frames may be copied to other, non- > preferred, > > memory frames. Why do it this way? Because it just leverages code that > > already exists rather than using special purpose code. Less code to > write > > and maintain is a _good_ thing. > > > > > > -- > > Windows. A funny name for a operating system that doesn't let you see > > anything. > > > > Maranatha! <>< > > John McKown > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
